Shock absorber



Patented Sept. 8, 1925.

UNITED STATES ZABIB ALKESAN, OF NEW YORK, N. Y., ASSIGNGR OF ONE-HALF TO MAX ROTH, OF

NEW YORK, N. Y.

SHOCK ABSORBER.

Application filed February 7, 1924. Serial No. 691,107.

To all whom it may concern:

Be it known that ZARIE ALMEsAN, citizen of the United States, residing at New York city, in the county of Bronx and State of New York, has invented certain new and elements and arrangement of parts which will be exem lified in the construction hereinafter described and of which the sec e of application will be indicated in the to lowing claims.

11 the accompanying drawing, in which is shown one of the various possible illustrative embodiments of this invention.

Fig. 1 is a side elevational view showing one wheel and axle and the springs of a motor vehicle with a shock absorber embodying this invention secured in position on the axle;

Fig. 2 is a corresponding end elevational view;

Fig. 3 is a longitudinal cross-sectional view of a shock absorber embodying this invention Fig. 4 is a detailed cross-sectional view taken along line l& of Fig. 3; and

Fig. 5 is a detailed cross-sectional view taken along line 55 of Fig. 3.

Referring in detail to the drawing, 10 indicates the rear axle of a motor vehicle, 11,

one of the side bars thereof, and 12 a leaf 18 and is likewise threaded at the bottom as at 19 for the hanger or attaching member 20. The cylinders are filled with a suitable liquid 21, such as oil, and operating within the inner cylinder 13 is a piston 22 carried by the plunger or pitman 23. The inner tube is threaded as at 13 for the screw regu lating cap 24, and the plunger '23 extends through said regulating cap 24, the latter being bored centrally so as to permit free movement of the plunger. The regulating screw 24 may be adjusted so as to contral the quantity of oil that is forced through the orifices 15, thus making, it possible to adjust the device to various spring tensions. Secured to the top of the plunger or formed integrally therewith is a ring member 25 whereby the plunger may be attached to the side bar or chassis of the vehicle. In the piston 22 are provided valve 0 enings 22 adapted to be opened and closed by means of hinged valves 22 or in other suitable valve members. A screw member 24 is provided with a polygonal head 2 1 and is adapted to be screwed in and out of the inner tube so as to regulate the size of the openings 15.

I preferably attach the shock absorber to the vehicle in the following manner: The plunger 23 is connected to the chassis or body by ineans of the ring member 25, and a bracket or yoke 26 extending from the side bar, and a pin or bolt27 so as to provide a swivel connection, said bracket being preferably oil-set from the spring as is best seen in Fi 2. The lower portion of the shock absor er is attached to the rear axle by means of the hanger 20 having a screw cap portion 20 which serves as a closure for the two cylinders being screwed to the'bottomof the outer cylinder 14, and provides a journal member 20 for the axle.

The operation of the shock absorber is as follows: When the spring of the vehicle contracts, the plunger will move downward, thus forcing open the valves 22 and causing ?some of the oil in the inner cylinder to be forced above the piston and through the opening 15into the outer cylinder. The oil in the inner'cylinder belowthe piston will at the same time flow through thev o enings 16 into the outer cylinder, causing a how of the oil in opposite directions from the inner into the outer cylinder.- .Upon theexpansion of the spring, the plunger 23 will be drawn upwerfl flies oiosing eciieteiy the valves 22* thereof forcing the oil in the book of the piston so flow throu h the openings 15 into outer who, eno from the outs? tube through the openings 16 into the inner tube It Wiii be seen that there is e flow or ciroulstion of oil between the outs? and inner cylinders during the downwarfi smi upward movement of the chassis which corresponds to the contraction end ex oension of the ve iiieie spring This eiireuietioi'i or flow acts as on effioienfz and responsive cushion to take up almost instenieeeousiy the shock imme- (iieteiy it is transmitted to the spring.

It will thus be seen thet there is providexi e device in which the severei objects of this invention are achieved and. which is Weii ediapteai to meet the conditions of practice} that on matter herein set forth or shows Losses in the accompanying drawings is to be he teipi-eiceti es iiiustretive and not in a limiting sense Having thus described my inveniion, I claim es new and. desire to secure by Leteers Patent:

3... A shock absorber for auto Vehicles comprising an outer cylinder and an inner cylin- :iei" me ietter including a plurality of openings spececi adjacent the top thereof c0mmuniceting with the outer cyliiqiciers and means supported by the inner cylinder for regulating the size of said openings.

2., A shock absorber for auto vehicles comprising an outer oyiinxier and an inner oyiin- 6191" the letter having openings adjaceni the Lop thereof e126. openings eoijsceni the bot tom thereof oommuniosting with the ouier eyiindei", and means for regulating she size oi said. first, mentioned openings, said. means comprising a threaded cs operative Within the upper portion of the inner eyiizidero In testimony whereof if efiix my signature 

